Development and change
Articles in SafetyLit 
 Y-Axis = Volume :: X-Axis = Issue 
?=unknown status :: X=no issue published :: nn=articles from issue :: A=relevant article(s) IDed to add
S=searched, nothing  relevant :: O=issue published but not yet searched :: C=combination issue
|  |  |  |  |  |  |  | 
| 30 (1999) | ? | ? | 2 | ? | ? | ? | 
| 33 (2002) | ? | ? | ? | ? | 1 | ? | 
| 37 (2006) | ? | ? | ? | 1 | ? | ? | 
| 38 (2007) | 6 | 3 | 1 | 5 | 1 | 7 | 
| 39 (2008) | 2 | 4 | ? | 3 | 3 | 5 | 
| 40 (2009) | 2 | ? | 4 | 1 | 2 | ? | 
| 41 (2010) | 1 | 2 | ? | 1 | 2 | ? | 
| 42 (2011) | ? | 2 | 2 | ? | 1 | ? | 
| 43 (2012) | ? | ? | ? | 1 | ? | ? | 
| 44 (2013) | ? | ? | ? | 1 | ? | ? | 
| 53 (2022) | ? | ? | ? | ? | ? | 1 |